1.8 do potegi -1/3
2.Rozwiąż
a) |2x-5|=25
b) |x-2|większe lub mniejsze od 3
1.
8 do potegi -1/3 = (1/8)^1/3 = ∛(1/8) = 1/22.Rozwiąża) |2x-5|=252x - 5 = 25 lub 2x - 5 = -252x = 25 + 5 2x = -25 + 52x = 30 2x = -20x =15 x = -10b) |x-2|≥ 3x - 2 ≥ 3 lub x - 2 ≤ - 3x ≥ 3 + 2 x ≤ -3 + 2x ≥ 5 x ≤ -1x ∈ (-oo, -1> u <5, +oo)
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1.
8 do potegi -1/3 = (1/8)^1/3 = ∛(1/8) = 1/2
2.Rozwiąż
a) |2x-5|=25
2x - 5 = 25 lub 2x - 5 = -25
2x = 25 + 5 2x = -25 + 5
2x = 30 2x = -20
x =15 x = -10
b) |x-2|≥ 3
x - 2 ≥ 3 lub x - 2 ≤ - 3
x ≥ 3 + 2 x ≤ -3 + 2
x ≥ 5 x ≤ -1
x ∈ (-oo, -1> u <5, +oo)